2006 INFINITI QX56 battery

LAN-130
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ICC sensor connector.
2. Check resistance between ICC sensor harness connector termi- nals.
OK or NG
OK >> Replace ICC sensor.
NG >> Repair harness between ICC sensor and harness con- nector E34.
ICC Unit Circuit InspectionUKS004TY
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of ICC unit for damage, bend and loose connection (unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ICC unit connector.
2. Check resistance between ICC unit harness connector termi- nals.
OK or NG
OK >> Replace ICC unit.
NG >> Repair harness between ICC unit and harness connec- tor B34.
Driver Seat Control Unit Circuit InspectionUKS004TL
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control unit side and harness side).
–Driver seat control unit connector
–Harness connector P1
–Harness connector B37
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
ICC sensor connector TerminalResistance
(Approx.)
E42 23 54 – 66 Ω
PKIC3840E
ICC unit
connector TerminalResistance
(Approx.)
B13 145 54 – 66 Ω
PKIC3841E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-131
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resistance between driver seat control unit harness con- nector terminals.
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair harness between driver seat control unit and har- ness connector B69.
Combination Meter Circuit InspectionUKS004TM
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of combination meter for damage, bend and loose connection (meter side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connec- tor terminals.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness between combination meter and data link connector.
Display Control Unit Circuit InspectionUKS004TN
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of display control unit for damage, bend and loose connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Driver seat control unit connector TerminalResistance
(Approx.)
P2 319 54 – 66 Ω
PKIA6842E
Combination
meter connector TerminalResistance
(Approx.)
M24 1112 54 – 66 Ω
PKIA6837E

LAN-132
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display control unit connector.
2. Check resistance between display control unit harness connec- tor terminals.
OK or NG
OK >> Replace display control unit.
NG >> Repair harness between display control unit and data link connector.
BCM Circuit InspectionUKS004TO
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of BCM for damage, bend and loose connection (control module side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check resistance between BCM harness connector terminals.
OK or NG
OK >> Replace BCM. Refer to BCS-20, "BCM" .
NG >> Repair harness between BCM and data link connector.
Data Link Connector Circuit InspectionUKS004TP
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connector of data link connector for damage, bend and loose connection (con- nector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Display control unit connector TerminalResistance
(Approx.)
M95 25 26 54 – 66 Ω
SKIA6884E
BCM connector TerminalResistance
(Approx.)
M18 394054 – 66 Ω
SKIA6869E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-133
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
Check resistance between data link connector terminals.
OK or NG
OK >> Diagnose again. Refer to LAN-5, "TROUBLE DIAG-
NOSES WORK FLOW" .
NG >> Repair harness between data link connector and combi-
nation meter.
Steering Angle Sensor Circuit InspectionUKS004TQ
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering angle sensor connector.
2. Check resistance between steering angle sensor harness con- nector terminals.
OK or NG
OK >> Replace steering angle sensor.
NG >> Repair harness between steering angle sensor and data link connector.
Front Air Control Circuit InspectionUKS004TR
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of front air control for damage, bend and loose connection (unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Data link
connector TerminalResistance
(Approx.)
M22 614 54 – 66 Ω
PKIA9865E
Steering angle
sensor connector TerminalResistance
(Approx.)
M47 3454 – 66 Ω
PKIA6838E

LAN-134
[CAN]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect front air control connector.
2. Check resistance between front air control harness connector terminals.
OK or NG
OK >> Replace front air control.
NG >> Repair harness between front air control and data link connector.
Transfer Control Unit Circuit InspectionUKS004TS
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of transfer control unit for damage, bend and loose connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect transfer control unit connector.
2. Check resistance between transfer control unit harness connec- tor terminals.
OK or NG
OK >> Replace transfer control unit.
NG >> Repair harness between transfer control unit and har- ness connector E152.
ABS Actuator and Electric Unit (Control Unit) Circuit InspectionUKS004TT
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of ABS actuator and electric unit (control unit) for damage, bend and loose connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Front air control connector TerminalResistance
(Approx.)
M50 34 35 54 – 66 Ω
PKIA8136E
Transfer control
unit connector TerminalResistance
(Approx.)
E142 7854 – 66 Ω
PKIA6844E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-135
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Revision: November 2009 2006 QX56
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check resistance between ABS actuator and electric unit (con- trol unit) harness connector terminals.
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Repair harness between ABS actuator and electric unit (control unit) and harness connector E152.
IPDM E/R Circuit InspectionUKS004TU
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of IPDM E/R for damage, bend and loose connection (control module side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector termi- nals.
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness between IPDM E/R and harness con- nector E152.
CAN Communication Circuit InspectionUKS004TV
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the harness connector for each unit on the CAN network and check terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector as necessary.
ABS actuator and electric unit (con-
trol unit) connector Terminal
Resistance
(Approx.)
E125 111554 – 66 Ω
SKIA6872E
IPDM E/R
connector TerminalResistance
(Approx.)
E122 3940108 – 132 Ω
PKIA8141E

TROUBLE DIAGNOSIS FOR SYSTEMLAN-137
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Revision: November 2009 2006 QX56
6. UNIT REPRODUCIBILITY INSPECTION
Perform the following procedure for each unit on the CAN network, and then perform reproducibility test.
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the unit connector.
4. Connect the battery cable to the negative terminal.
5. Make sure that the symptom filled in the “Symptom” of the check sheet is reproduced. (Do not confuse it
with the symptom related to removed unit.)
6. Make sure that the same symptom is reproduced.
Inspection results
Reproduced>>Install removed unit, and then check the other unit.
Not reproduced>>Replace removed unit.
IPDM E/R Ignition Relay Circuit InspectionUKS004TW
Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to PG-28, "IPDM E/R Power/Ground Circuit Inspection" .

Ignition power supply circuit. Refer to PG-13, "IGNITION POWER SUPPLY — IGNITION SW. IN ON
AND/OR START" .

LT-1
LIGHTING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION
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LT
Revision: November 2009 2006 QX56
PRECAUTIONS .....................................................
..... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 4
General precautions for service operations ........ ..... 4
HEADLAMP (FOR USA) ....................................... ..... 5
Component Parts and Harness Connector Location ..... 5
System Description ............................................. ..... 5
OUTLINE .......................................................... ..... 5
XENON HEADLAMP ........................................ ..... 6
BATTERY SAVER CONTROL ......................... ..... 7
AUTO LIGHT OPERATION .............................. ..... 7
VEHICLE SECURITY SYSTEM (PANIC ALARM) ..... 7
CAN Communication System Description ........... ..... 7
Schematic ........................................................... ..... 8
Wiring Diagram — H/LAMP — ............................ ..... 9
Terminals and Reference Values for BCM .......... ... 13
Terminals and Reference Values for IPDM E/R .. ... 14
How to Proceed With Trouble Diagnosis ............. ... 14
Preliminary Check ............................................... ... 14
CHECK POWER SUPPLY AND GROUND CIR-
CUIT ................................................................. ... 14
CONSULT-II Function (BCM) .............................. ... 16
CONSULT-II OPERATION ............................... ... 16
WORK SUPPORT ............................................ ... 17
DATA MONITOR .............................................. ... 17
ACTIVE TEST .................................................. ... 18
SELF-DIAGNOSTIC RESULTS ....................... ... 18
CONSULT-II Function (IPDM E/R) ...................... ... 19
CONSULT-II OPERATION ............................... ... 19
DATA MONITOR .............................................. ... 20
ACTIVE TEST .................................................. ... 20
Headlamp HI Does Not Illuminate (Both Sides) .. ... 21
Headlamp HI Does Not Illuminate (One Side) .... ... 23
High Beam Indicator Lamp Does Not Illuminate . ... 24
Headlamp LO Does Not Illuminate (Both Sides) . ... 24
Headlamp LO Does Not Illuminate (One Side) ... ... 26
Headlamps Do Not Turn OFF ............................. ... 27
Aiming Adjustment .............................................. ... 29
HEADLAMP AIMING ........................................ ... 29Bulb Replacement ...............................................
... 30
HEADLAMP (OUTER SIDE), FOR LOW BEAM ... 30
HEADLAMP (INNER SIDE), FOR HIGH BEAM ... 31
FRONT PARKING LAMP (INNER OR OUTER) ... 31
SIDE MARKER LAMP (FRONT) ......................... 31
Removal and Installation ..................................... ... 31
FRONT COMBINATION LAMP ASSEMBLY .... ... 31
INSTALLATION ................................................ ... 32
Disassembly and Assembly ................................. ... 32
FRONT COMBINATION LAMP ASSEMBLY .... ... 32
DISASSEMBLY ................................................ ... 32
ASSEMBLY ...................................................... ... 32
HEADLAMP (FOR CANADA) - DAYTIME LIGHT
SYSTEM - ............................................................... ... 33
Component Parts and Harness Connector Location ... 33
System Description .............................................. ... 34
OUTLINE .......................................................... ... 34
DAYTIME LIGHT OPERATION ........................ ... 34
COMBINATION SWITCH READING FUNCTION ... 34
AUTO LIGHT OPERATION .............................. ... 35
CAN Communication System Description ........... ... 35
Schematic ............................................................ ... 36
Wiring Diagram — DTRL — ................................ ... 37
Terminals and Reference Values for BCM ........... ... 41
How to Proceed With Trouble Diagnosis ............. ... 42
Preliminary Check ............................................... ... 42
CHECK BCM CONFIGURATION ..................... ... 42
INSPECTION FOR POWER SUPPLY AND
GROUND CIRCUIT .......................................... ... 42
INSPECTION PARKING BRAKE SWITCH CIR-
CUIT ................................................................. ... 43
CONSULT-II Functions ........................................ ... 44
Daytime Light Control Does Not Operate Properly
(Normal Headlamps Operate Properly) ............... ... 44
Aiming Adjustment ............................................... ... 46
Bulb Replacement ............................................... ... 46
Removal and Installation ..................................... ... 46
Disassembly and Assembly ................................. ... 46
AUTO LIGHT SYSTEM .......................................... ... 47
Component Parts and Harness Connector Location ... 47